Brian O'Higgins (1882-1966), born Kilskeer, near Kells, Meath. Fought in 1916 Rising, TD for Clare in 1922. President of Sinn Fein 1931-33. 107 of his songs published in his Wolfe Tone Album 1950 (I have a copy).

"Moses" is probably his best known song but he also wrote hundreds of others, including:

John Mitchel,
Maurice O'Neill,
Soldiers of '22,
O'Donovan Rossa,
Victoria (recorded by Grehan Sisters).

I have Margaret Barry singing "Moses": only the words are given, there is no note on the song. (It's on "I Sang Through the Fairs" album).